2. 5,004 options have vested and remain exercisable, 2,501 will vest on October 31, 2018.

3. All 5,000 options have vested and remain exercisable.

4. The exercise price will be paid in pounds sterling, at GBP0.91 per share.

5. All 5,025 options have vested and remain exercisable.

6. 2,909 options vested on October 31, 2017 and remain exercisable, 2,909 options will vest on October 31, 2018, 2,908 options will vest on October 31, 2019.

7. On October 31, 2016, the Reporting Person was granted 5,236 restricted stock units, of which 2,618 have vested and have been exercised. The remaining 2,618 restricted stock units will vest on October 31, 2018.

8. The warrants are immediately exercisable.

9. The options vest and become exercisable in three equal annual installments beginning October 31, 2018.

10. On October 31, 2017, the Reporting Person was granted 5,758 restricted stock units, vesting in two equal installments on October 31, 2018 and October 31, 2019.

Remarks:

/s/ Frederick Hallsworth

11/02/2017

** Signature of Reporting Person

Date

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person,
see
Instruction
4
(b)(v).